Opposed disk rotor type centrifugal pulverizer



March 28, 1950 c. F. PAUL 2,502,022

OPPOSED DISK ROTOR TYPE CENTRIFUGAL PULVERIZER Filed May 1, 1944 I v 2Sheets- Sheet 1 CH/P/ST/A/V F. PA U Zfinventor Gttomeg March 28, 1950 c.F. PAUL 2,502,022

OPPOSED DISK ROTOR TYPE CENTRIFUGAL PULVERIZER Filed May 1, 1944 2Sheets-Sheet 2 V A WM l'snventor (HR/6 77A N F PA u1 Patented Mar. 28,1950 OPPOSED DISKROTOR TYPE GENTRIFUGAL PULVERIZER Christian F. Paul,Los Angeles, Calif; Application May 1, 1944, Serial No. 533,609

3 Claims- (Cl. 241-163) This invention relates to a bombarding machinesuitable for use in the reduction of materials, such for example, asdisassociation of materials from other materials, like quartz, thedestruction of coal for producing synthetic resin components and othermaterials; the primary object in operation of the machinebeing to reducethe substance under treatment to its in dividual crystallography.

It is the primary object of the invention to provide a new and improvedmachine of the character indicated wherein materials canv be bombardedbya cyclonic action created by the opposite rotation of two or morecentrifugal pockets formed by a succession of ring members.

A further object of the invention is to provide a new and improveddevice of the character described wherein counter slip streams arecreated by oppositely rotated annular flange-like rings whereby a highdegree of turbulence is created in the space between the rings, intowhich area material is adapted to be projected by the. centrifugalaction of the innermost of the concentric rings and the substance undertreatment is reduced by the combination of the centrifugal forcefollowed by the cyclonic turbulence in the intermediate surface, saidmachine. being capable of generating heat which is often advantageous intreating certain materials. I

An important object of the. invention is to provide a new and improvedmachine of the character described in which any tendency to. abrasion ofthe operating. parts. is minimized.

A still further object of. the invention is to provide a new and.improved device of the character described in which-there. is apluralitv of concentric. annular .pockets between. flanged ringssuitably mounted on bearings whereby alternate rings may be oppositelyrotated at high rates of speed, with means. for introducing a sub.-

. stance or substances to be treated into the inner of the concentric.rings, either wet or dry or a combination of a dry substance coupledwith theintroduction of a liquid, said rings being capable. of oppositerotation whereby the material is sub ected to cyclonic bombardment.while be.- ing pas ed centrifugally from one ring to the rest until ithas been. discharged into a housing beyond the. outermost ring fromwhich housing.

the treated substance may be withdrawn.

An advantage of. importance resides in the provision of a new andimproved machine capable of use in a manner adapted to subiect thematerial to an, abrasive treatment resulting from a cooperative. action,of an air force and a centrifugal force and a rotative force andremoving the material from the field of action of the air force and itscooperative forces and adapted immediately thereafter to subject thematerial to another combination of an air force, and a centrifugal androtative force greater than the first named centrifugal and rotativeforce of another air force and another centrifugal force greater thanthe first named combination of forces.

These and additional advantages of the invention will be made furtherapparent from the description which is. taken in connection with thedrawing.

The essence of the apparatus invention resides in a machine whichembodies a rotor mounted for rotation at high speed, incorporating anannular pocket in which material first accumulates under the influenceof centrifugal force, then escapes at the open end of the pocket fromwhich it is discharged at high velocity into an oppositely disposedconcentric pocket of similar design which is either stationary, idlymounted, or rotated in an opposite direction. The best results areachieved by rotating the rotors in opposite directions. Increased effectis obtained by employing a series of the alternate y disposed concentricpockets. Means for introducing material for treatment into the innermostpocket is provided, and there is provided a confinin housing or chamberto receive the products of reduction, with suitable means for removingthe latter.

The essence of the proce s invention resides in sub ecting a material toreduction in form and crystallography b the cooperative action of air,rotational and centrifugal forces in one pocket space and subsecuentlymoving t e materials into another pocket space and subjecting thematerial to another coop rative action air and rotational and centrifual forces greater magnitude than those first acting the material.

In the drawings:

Figure 1 is an end view of a machine embodyin my invention.

Fi ure 2 is a cross sectional View taken on the line 2--2 of Figure 1.

Figure 3 is a cross sectional view to a reduced scale of the structureof Figure 2 along the line 3-3 in the direction indicated.

Figure .4 is a. fragmentary elevation as indicated by the line 44 inFigure 2.-

I provide a suitablev supporting frame it. comprising a base H andvertical standards l2.

Upon the base II is bolted or otherwise mounted an annular housing l3which for convenience of manufacture assembly may have one plane wall l4and an integral annular flange l5, the latter being provided withthreaded bosses I5 whereby a plane closure plate I! may be bolted uponthe flange by means of cap screws l8. A suitable sealing gasket notillustrated may obviously be employed between the flange l5 and theplate l7, if necessary or desirable. The central area of the plates l4and H are cut out to define annular bearing elements l9 which closelyengage hubs and 2| of pulleys 22 and 23 subsequently described ingreater detail.

The frame members 2 provide rigid mountings in the form of sockets 25and caps 26 secured by bolts 21 for rigidly clamping stationary hollowshafts 28 and 29. These shafts may be identical. They are preferablyformed with an intermediate shoulder 30 and a reduced inner section 3|,the latter of which supports one-half of one or more ball races 32. Theinner ends of both shafts are threaded as illustrated to receive nuts33.

Mounted on the shaft '28 is a rotor 49 and on the shaft 29 is a rotor4|. These are subsequently described in greater detail. The pulley 22 isbolted to the rotor 40 by means of bolts 42 and the pulley 23 is boltedto the rotor 4| by bolts 43. These pulleys contain outer ball races 44,and between the inner and outer ball races are balls 45, wherebybearings are provided for rotation of the pulleys 22 and 23 with theirrespective rotors 40 and 4| on the stationary shafts 28 and 29.

The pulleys are formed with V notches 59 for receiving conventional Vbelts, not illustrated, which may be driven by any suitable high speedpower means for rotating the pulleys. These pulleys are to be rotated inopposite directions whereby the rotors 49 and 4| rotate oppositely, asindicated at A and B, Figure 3. The rotor 40 comprises an annular plate5| formed with one or more integral cylindrical flanges 52 whichterminate in annular lips 53 inclined away from the plate 5|. In thelips are provided circular openings 54, and this construction of therotor provides annular pockets 55 for purposes which will become furtherap parent.

The rotor 4| is constructed similarly to the rotor 49 except that itsannular flanges and retaining pockets alternate centrifugally, i. e. indistance from the center of the rotor, with the flanges and retainingpockets of the rotor 40. The flanges of the two rotors overlap so thatany material originally disposed in the inner cylindrical pocket formedby the innermost flange 52 must necessarily be passed along a sinuouscourse in moving centrifugally from the inner cylindrical member throughthe concentric outwardly succeeding cylinders.

In the top of the left-hand cap 25 as viewed in Figure 2, is provided alarge tapped hole for receiving a threaded pipe 69 which may extendupwardly a suitable distance and be connected by a pipe cross member 6|of well known construction to a horizontally disposed pipe member 62extending away from the machine to a source of the material to betreated in the machine. Threaded plugs 63 and 64may be employed forclosing the other holes in the cross pipe member when those holes arenot being used.

During some uses of the machine certain things such as water or otherfluids may be introduced through the openings in the pipe cross memberafter removing the plugs 64 and/or 63.

A conveyor screw 65 mounted on a shaft 66 in the hollow shaft 28 movesthe material passing through the pipe 60 into the cylindrical member 52.The shaft 66 has a bearing arranged in the outer end of the shaft 28 andincluding a thick plug 6! screwed into the end of the shaft 28constructed to receive a bushing element of a hollow stub shaft 68integrally joined to V pulley 69. The stub shaft is fastened to theshaft 66 by a pin or the like. A V belt 19 connects the pulley 69 with aV pulley H on the shaft of an electric motor 12.

By means of well known connecting means (not shown) this motor may, ifdesired, also drive the rotors of the machine in opposite directions.

The hollow in the shaft 29 may be closed at its outer end by a threadedplug 15 screwed into the end of the shaft. Fastened in the plug 15, arod 16 extends inwardly to the inner end of the shaft 29 and hasfastened to its end a removable closure membe H. In a tapped hole in thetop of the right-hand cap 25 is screwed a plug l8 which covers a hole 19in shaft 29. It can be seen that by this construction material to bebrought into my bombarding machine can be introduced, when desirable,through the hollow shaft 29 as well as through the shaft 28, afterremoving the closure members 11 and 18.

For removing the finely ground or powdered solid material from mymachine, an arcuate slot is provided near the bottom of the machine andit may have a closure plate 8| fastened in place by a plurality ofscrews 82. In the plate 8|, is provided a hole 83 of suitable diameterand when the material treated in my machine is in a fluid state it mayoften be removed through the hole 83.

It can be readily seen that either of the rotor plates 40 and 4| may bedisconnected from its power source and left to float idly and remainstationary or to be revolved by action of the material at a slower speedthan the driven rotor plate. Or the undriven rotor plate may befastened, when desired, to its associated stationary hollow shaft by anysuitable conventional means such as one or more set screws (not shown).

Some of the advantages of my bombarding machine will be apparent fromthe foregoing description. Other advantages arise from the oppositerotation of the alternate rotors which causes opposing eddies to effecta bombarding action. To accomplish this, the rotors should be driven ata high rate of speed.

There may be a planetary atmospheric condition, that is, a thin layer ofstill or slow moving air next to a layer of material, thus the materialwill usually move over the lips substantially at rest, notwithstandingthe peripheral speed of the rotors. Abrasion of the rotor flanges isthus further minimized.

Although I have herein shown and described my invention in what I haveconceived to be the most practical and preferred embodiment, it isrecognized that departures may be made therefrom within the scope of myinvention, which is not to be limited to the details disclosed hereinbut is to be accorded the full scope of the claims so as to embrace anyand all equivalent machines which may be apparent to those skilled inthe art.

Having described my invention, what I claim as new and desire to secureby Letters Patent is:

1. A disintegrating machine comprising a supporting frame, spacedaxially aligned horizontal shafts fixed on the frame, an annular housingattached to the frame encompassing the space between said shaftscomprising lateral and circumferential wall portions, a rotor rotatablymounted on one of said shafts and a drive therefor in one direction, arotor on the other shaft in axially spaced relation to the first rotorand a drive therefor in the opposite direction, each said rotorcomprising a radially extending annular plate, a plurality of flanges ofequal breadth and substantially uniform thickness extending transverselyfrom the side of the plate adjacent the other rotor and lips ofsubstantially equal depth at the free edges of the flanges extendingradially inwardly toward the common axis of the shafts forming pockets,said lips being beveled laterally outwardly, said flanges on one of therotors being intermeshed in alternate relationship and at substantiallyequal distances from adjoining flanges of the other rotor andoverlapping for distances not less than substantially one-half thebreadth of the flanges, means forming a feed passage through one of therotors to a location within the innermost flange and one of the lateralwall portions having a laterally directed outlet adjacent thecircumferential wall portion.

2. A disintegrating machine comprising a supporting frame, spacedaxially aligned horizontal shafts fixed on the frame, an annular housingattached to the frame encompassing the space between said shaftscomprising lateral and circumferential wall portions, a rotor rotatablymounted on one of said shafts and adrive therefor in one direction, arotor rotatably mounted on the other shaft in axially spaced relation tothe first rotor and a drive therefor in the opposite direction, eachsaid rotor comprising a radially extending annular plate, a plurality offlanges of substantially equal breadth extending transversely from theside of the plate adjacent the other rotor and lips of substantiallyequal depth at the free edges of the flanges extending radially inwardlytoward the common axis of the shafts forming pockets, said lips beingoutwardly beveled at an angle not greater than 135 degrees from therespective flange, said flanges on one of the rotors being intermeshedin alternate relationship and at substantially equal distances fromadjoining flanges of the other rotor and overlapping for distancesgreater than one-half the breadth of the flanges, means forming a feedpassage through one of the shafts and the corresponding rotor to alocation within the innermost flange and one of the lateral wallportions having a laterally directed outlet adjacent the circumferentialwall portion.

3. A disintegrating machine comprising a supporting frame, spacedaxially aligned horizontal shafts fixed on the frame, at least one ofsaid shafts having a feed bore therethrough and a feed device associatedtherewith, an annular housing attached to the frame encompassing thespace between said shafts comprising spaced parallel radially disposedside walls and a cylindrical outer wall, a rotor rotatably mounted onone of said shafts and a drive therefor in one direction, a rotorrotatably mounted on the other shaft in axially spaced relation to thefirst rotor and a drive therefor in the opposite direction, each saidrotor comprising a radially extending annular plate, a plurality offlange strips of equal breadth and uniform thickness extendingtransversely at right angles from the side of the plate adjacent theother rotor and lips of substantially equaldepth at the free edges ofthe flanges extending radially inwardly toward the common axis of theshafts forming pockets, said lips being outwardly beveled away from theplate at an angle not greater than degrees from the respective flange,said flanges on one of the rotors being intermeshed in alternaterelationship and at substantially equal distances from adjoining flangesof the other rotor and overlapping for distances greater thansubstantially one-half the breadth of the flanges, one of the side wallsof the housing having a laterally directed outlet spaced radiallyinwardly from the outer wall thereof and adapted thereby to form apocket at said outer wall.

CHRISTIAN F. PAUL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 801,854 Dorey Oct. 17, 19051,221,952 Adams Apr. 10, 1917 1,226,032 Van Nostrand May 15, 19171,363,572 Dalzell Dec. 28, 1920 1,489,787 Povey Apr. 8, 1924 1,624,037Butler Apr. 12, 1927 1,670,593 Miller May 22, 1928 1,696,083 Fraser Dec.18, 1928 1,801,849 Cuniff Apr. 21, 1931 1,937,788 Ross Dec. 5, 19332,040,816 Kaemmerling May 12, 1936 2,097,890 Myers Nov. 2, 19372,139,933 Chenoweth Dec. 13, 1938 2,164,409 Johnson July 4, 19392,171,525 Ainsa Sept. 5, 1939 2,171,526 Ainsa Sept. 5, 1939 FOREIGNPATENTS Number Country Date 308,095 Great Britain Acctd. Mar. 21, 1929

